
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        while (input.hasNextInt()) {
            int a = input.nextInt();
            int b = input.nextInt();
            if(Math.abs(a)>1000){System.out.println("a<=1000");}
            else System.out.println(a + b);
        }
    }
}